#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
int main()
{
	int n;
	scanf("%d", &n);
	for (int i = 1; i <= n; i++)
	{
		for (int j = 1; j <= n - i; j++)
		{
			printf(" ");
		}
		for (int j = 1; j <= 2*i - 1; j++)
		{
			printf("*");
		}
		printf("\n");
	}
	for (int i = 1; i < n; i++)
	{
		for (int j = 1; j <= i; j++)
		{
			printf(" ");
		}
		for (int j = 2 * (n - i) - 1; j >= 1; j--)
		{
			printf("*");
		}
		printf("\n");
	}
	return 0;
}